| 摘要 |
<p>1,181,482. Coated polyester textile material. UNIROYAL Inc. 31 Jan., 1968 [23 Feb., 1967], No. 5075/68. Heading B2E. [Also in Divisions B5 and D1] A method of forming a laminate of polyester textile material adhering to rubber comprises dipping the bare polyester material on an aqueous dispersion of an epoxy resin and a blocked isocyanate, and drying the dipped material, preparing a rubber composition containing a methylolated nitro alkane, said nitro alkane having 1 to 6 carbon atoms, and a resorcinol-type methylene acceptor, placing the dried polyester textile material in contact with the rubber composition and vulcanising the rubber so causing the nitro alkane to react with the methylene acceptor. The textile materials may be in the form of yarns, cords or fabrics. The rubber composition may be applied to the textile by calendering. The blocked isocyanate is preferably at least difunctional, the specified blocking groups being derived from a phenol or caprolactam. Specified methylene acceptors are resorcinol and other n-disubstituted benzenes wherein each of the substituents is an OH, NH 2 , or OCOCH 3 radical or a partially reacted condensate of resorcinol with a carbonyl compound e.g. formaldehyde and/or acetaldehyde or acetone. The rubber is preferably sulphur vulcanisable and may be natural rubber, a conjugated diolefine polymer or a mixture thereof. Reclaimed rubber may be used. Conventional compounding and vulcanising agents are included in the rubber composition. Preferably, the dried, dipped textile material is passed through an aqueous dispersion of natural or synthetic rubber and dried prior to application of the vulcanisable rubber composition. Examples describe (1) and (2) the bonding of a polyester tyre cord to a rubber composition; (3) the manufacture of a tyre and (4) the bonding of a backing fabric, liner stock, two plies of polyester tyre fabric at 45‹ and tread stock.</p> |
